Skeletonization

[Neil Yager]

Here are the outputs of the existing code for those examples:

http://www.fjolad.com/ngy/img/leg_existing.png
http://www.fjolad.com/ngy/img/text_existing.png

Take note of the squiggles in the text example.

A simple way to illustrate the difference is this example:

http://www.fjolad.com/ngy/img/square_example.png

As you can see, the results are very different. Once again, there are
situations where both are useful. The former keeps an indication of
size, while the latter keeps only topology.

Neil